Bicycle helmet



FIG. 1 is a perspective view for a bicycle helmet;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof with the retractable covers open;

FIG. 7 is a top view thereof with the retractable covers closed; and,

FIG. 8 is a bottom view thereof.

The broken lines are included for the purpose of illustrating environmental features and form no part of the claimed design. 

CLAIM The ornamental design for a bicycle helmet, as shown and described in the Figures. 